If you use the MAC lockout feature to block a specific MAC address on an HP 3500zl switch,
which traffic is dropped?

A.
The switch will drop traffic from devices directly connected to the specific port on which MAC
lockout is enabled if the destination or source address is the specified MAC address.

B.
The switch will drop frames only if the source address is the specified MAC address and port
security is also configured on the receiving port.

C.
The switch will drop any Layer 2 traffic that contains the specified MAC address as the source
address.

D.
The switch will drop routed or switched traffic if the destination is the specified MAC address.

Explanation:
It blocks both if the MAC address is the source address and if the MAC address is
the destination address.
Note:
MAC Lockout involves configuring a MAC address on all ports and VLANs for
a switch so that any traffic to or from the “locked-out” MAC address will be
dropped. This means that all data packets addressed to or from the given
address are stopped by the switch. MAC Lockout is implemented on a per
switch assignment.
You can think of MAC Lockout as a simple blacklist. The MAC address is
locked out on the switch and on all VLANs. No data goes out or in from the
blacklisted MAC address to a switch using MAC Lockout.
To fully lock out a MAC address from the network it would be necessary to
use the MAC Lockout command on all switches.
To use MAC Lockout you must first know the MAC Address you wish to block.
Reference: Configuring and Monitoring Port Security